TWM617637U - Integrated white light transmitting device and touch display - Google Patents

Abstract

The present invention discloses an all-in-one white touch display, comprising: a protective cover plate, in the middle of the protective cover plate, a visible area penetrating through the upper surface and the lower surface is formed; a touch module, which is arranged on the protective cover plate Underneath, and used to provide touch function; a light valve module, which is arranged under the touch module and filled with a polymer dispersed liquid crystal layer; a microstructure optical film, which is arranged on the light valve module Below, a second surface of the microstructured optical film is composed of a plurality of microstructures; when incident light enters the invention, the incident light will be scattered by the polymer liquid crystal module, and part of the incident light will be reflected by the microstructured optical film Then, it penetrates the polymer liquid crystal scattering module again, so that the user can observe the foggy white display from the visible area.

Description

Integrated white light transmitting device and touch display

A light-transmitting device and a touch-control display, in particular, a light-transmitting device and a display with an integral white appearance.

At present, the application fields of touch displays on the market are becoming wider and wider, including mobile phones, tablets, laptops, electronic whiteboards, and car machines. The touch monitors used at this stage can be roughly divided into bezels and no bezels. For monitors with bezels, since the display screen of the touch display is black when it is turned off or in standby, most Of manufacturers use black or dark borders when designing touch displays, so that the color of the border is very close to the color of the display screen. When the touch display is turned off or in standby, the color of the display screen and the border can remain the same.

However, whether it is a bordered or borderless touch display, when the touch display is installed in home appliances such as refrigerators, microwave ovens, etc., if the exterior color of the home appliance is black or other dark colors, the touch display will stand by or When it is turned off, the black displayed by the touch display can be consistent with the appearance color of the home appliance, and it will not be visually obtrusive. If the exterior color of the home appliance is white or other whitish colors, when the touch display is in standby or shut down, the black displayed by the touch display is greatly different from the exterior color of the home appliance, causing a problem of poor visual coordination. Even with a white frame, the color of the frame is still inconsistent with the black displayed by the touch display.

In order to enable the display screen of the touch display to show a lighter color when it is in standby or shut down, the present invention proposes an all-in-one white touch display. The light valve module is matched with a structural optical film design, so that the display screen is It can appear white or light white when it is in standby or shut down.

In order to achieve the above objective, the present invention provides a solid white touch display which includes: a protective cover plate, which includes an upper surface and a lower surface, and a visible area is formed in the middle of the protective cover plate; and a touch module, which is arranged On the lower surface of the protective cover plate to provide a touch function; a light valve module, which is arranged under the touch module, the light valve module includes: a housing; a conductive film, The conductive film is arranged inside the casing to generate an electric field; a polymer dispersed liquid crystal layer is filled in the casing and can be driven by the electric field to present a scattering state and a transparent state; a micro-structured optical film, It is arranged under the light valve module, the microstructured optical film includes a first surface and a second surface opposite to each other, the first surface is attached to the light valve module, and the second surface is covered by a plurality of microstructures. The structure, wherein each of the microstructures is a structure with a micro-triangular cross-sectional shape; a display module is arranged under the microstructure optical mold to provide a display function.

The present model also provides an integrated white light transmission device, including: a light valve module, including: a housing; a conductive film arranged inside the housing, and the conductive film can be energized to generate an electric field; and a polymer dispersed liquid crystal The layer is filled in the shell and can be driven by the electric field to present a scattering state and a transparent state; A micro-structured optical film is disposed under the light valve module, the micro-structured optical film includes a first side and a second side opposite to each other, the first side is connected to the light valve module, and the second side is formed by It is composed of a plurality of micro-fins, and each micro-fin is a structure whose cross-sectional shape is a tiny triangle.

The light valve module of the present invention is filled with a polymer dispersed liquid crystal layer. When incident light enters the light valve module, the incident light can be scattered, and part of the incident light can further penetrate the light valve module and be directed toward the light valve module. With a micro-structured optical film, part of the incident light is reflected back to the light valve module through the micro-structure, and finally penetrates the touch module and the protective cover plate to enter the user’s eyes, so that the user can remove the light from the protective cover plate. A fog-white display is observed in this viewing area. When matched with a white or lighter-colored home appliance or a white frame, the color of the display screen and frame can be kept consistent, which increases visual coordination and reduces visual abruptness. .

10: Protective cover

11: Viewing area

20: Touch module

21: Optical glue

30: Light valve module

31: Shell

33: conductive film

35: Polymer dispersed liquid crystal layer

351: High molecular polymer

353: LCD

40: Microstructure optical film

41: Slightly ridiculous

411: reflective surface

50: display module

51: upper polarizer

53: display

55: Lower polarizer

57: Optical glue

60: Backlight module

70: Border

L: incident light

RL: reflected light

θ: Angle

Figure 1: A schematic side view of the present invention in cross-section.

Figure 2: The three-dimensional exploded schematic view of the present invention.

Figure 3: A schematic diagram of the light valve module of the present invention in a scattering state.

Figure 4: A schematic diagram of the light valve module of the present invention in a transparent state.

Figure 5: A schematic side sectional view of the new type of microstructure optical mold.

In order to understand the technical features and practical effects of the present invention in detail, and to implement it in accordance with the new content, the preferred embodiments shown in the drawings are further described in detail as follows:

1 and 2, the present invention discloses an integrated white touch display, including: a protective cover 10, a touch module 20, a light valve module 30, a microstructure optical film 40 and a display module Group 50.

The cover lens (C/L) 10 has a plate shape and includes an upper surface and a lower surface. A visible area 11 is formed in the middle of the cover lens 10.

The touch module 20 is disposed on the lower surface of the protective cover 10, and is attached to the lower surface of the protective cover 10 through an optical glue 21, wherein the touch module 20 is light-transmissive. The touch module 20 is used to provide a touch function. Specifically, the touch module 20 may include a plurality of X-axis sensing lines and a plurality of Y-axis sensing lines, the plurality of X-axis sensing lines and the plurality of Y-axis sensing lines In a light-transmissive shape, the plurality of X-axis induction lines are arranged parallel to each other and spaced apart, the plurality of Y-axis induction lines are arranged parallel to each other and spaced apart, and the plurality of X-axis induction lines and the plurality of Y-axis induction lines intersect respectively. The touch module 20 determines the touch position of the touch object by acquiring which X-axis sensing lines and Y-axis sensing lines triggered by a touch object (finger, stylus), and further outputs touch actions.

Please further refer to FIG. 3. The light valve module 30 is disposed under the touch module 20. The light valve module 30 includes a housing 31, a conductive film 33 and a polymer dispersed liquid crystal layer 35. The conductive film 33 is disposed inside the casing 31 and can conduct electricity to generate an electric field by applying an external voltage through an external power source V; the polymer dispersed liquid crystal layer (Polymer Dispersed Liquid Crystal, PDLC) 35 is filled inside the casing 31 Specifically, the polymer dispersed liquid crystal layer 35 is composed of a polymer 351 covering an anisotropic liquid crystal 353. The light valve module 30 can apply the applied voltage to the conductive film 33 to cause the conductive film 22 to generate the electric field, and further regulate the refraction between the liquid crystal 353 and the polymer 351 through the size and direction of the electric field. In order to achieve the light valve function, the high molecular polymer 351 can be (Norland optical adhesive 65, NOA65).

Please refer to FIG. 3, when no external voltage is applied (the novel shutdown or standby), the high molecular polymer 351 and the liquid crystal 353 are not affected by the electric field, and the liquid crystal 353 and the high molecular polymer 351 are arranged arbitrarily. The effective refractive index does not match the effective refractive index of the high molecular polymer 351. An incident light L entering from the protective cover 10 is blocked by the liquid crystal 353 and the high molecular polymer 351, and the incident light L is scattered. The polymer dispersed liquid crystal layer 35 thus forms a scattering state (an off state). Therefore, when the light valve module 30 is observed, the reflective surface of the light valve module 30 appears hazy white.

Referring to FIG. 4, when the applied voltage is applied to the conductive film 33 (when the present invention starts to operate), when the polymer 351 and the liquid crystal 353 are driven by the electric field, the liquid crystal 353 will be driven by the electric field to be vertically aligned. Since the effective refractive index of the liquid crystal 353 is the same as the effective refractive index of the polymer 351, the incident light L can pass through the light valve module 30, so that the light valve module 30 is in an on state. Generally speaking, the incident light L is ambient natural light, such as sunlight or light from a lamp.

Please further refer to FIG. 5, the microstructured optical mold 40 is disposed under the light valve module 30, and is a semi-transmissive and semi-reflective microstructure. The microstructured optical film 40 includes a first surface and a second surface opposite to each other. The first surface is attached to the light valve module 30, and the second surface is composed of a plurality of microstructures 41, wherein each microstructure 41 is a structure whose cross-sectional shape is a tiny triangle. The plurality of micro ridges 41 are arranged adjacent to the second surface, and each micro ridge 41 includes two reflective surfaces 411 that sandwich an angle θ with each other, and the two reflective surfaces 411 and the second surface together form a tiny triangular structure . The angle θ may be 90°.

As shown in FIGS. 2 and 5, when the incident light L passes through the light valve module 30 and enters the microstructure optical mold 40, the incident light L will be reflected by one of the reflective surfaces 411 to the other reflective surface. 411. Finally, it passes through the light valve module 30 and scatters out from the protective cover 10. In other words, the microstructured optical mold 40 can re-transmit the incident light L through the light valve module 30 after being reflected twice, and the user can observe the foggy white display in the viewing area 11.

Please refer to FIG. 1, the display module 50 is disposed under the microstructure optical mold 40 and is used to provide a display function. Specifically, the display module 50 includes an upper polarizer 51, a display 53 and A lower polarizing plate 55, the upper polarizing plate 51 can be pasted under the microstructure optical mold 40 through another optical glue 57, the display 53 is arranged under the upper polarizing plate 51, and is sandwiched on the upper polarizing plate 51 and the lower polarizing plate 55, wherein the upper polarizing plate 51 can be a 0 degree polarizing plate, and the lower polarizing plate 55 can be a 90 degree polarizing plate. In a preferred embodiment, the display module 50 may be a liquid crystal display module, and the display 53 is a liquid crystal display; or, the display module 50 may be a light emitting diode display module, and the display 53 It is a light emitting diode display.

In a preferred embodiment where the display module 50 is a liquid crystal display module, it further includes a backlight module 60 which is disposed under the liquid crystal display module 50 and is used to provide a backlight source.

As shown in FIG. 3, when the incident light L from the environment enters the present invention from the visible area 11 of the protective cover 10, the incident light L penetrates the transparent touch module 20, and then enters the Light valve module 30. When there is no external electric field, the incident light L is blocked and scattered by the liquid crystal 353 and the polymer 351 in the light valve module 30, and at the same time, the incident light L partially penetrating the light valve module 30 is received by the micro The reflection of the structural optical mold 40 forms a reflected light RL. The reflected light RL penetrates the light valve module 30, the touch module 20, and the visible area 11 of the protective cover 10, so that the user views the protective cover When the visible area 11 of the cover plate 10 is visible, it can be observed that the visible area 11 is white.

Please refer to FIG. 1. In a preferred embodiment of the present invention, a frame 70 is further included. The frame 70 is frame-shaped and is disposed between the protective cover 10 and the touch module 20. The frame 70 White ink is applied to make the frame 70 appear white. Since the frame 70 is white, when the present invention is turned off, both the visible area 11 and the frame 70 appear white, and the user can observe that the outer surface of the present invention is white, achieving a unified white visual effect.

The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the professional technology Personnel, without departing from the scope of the new technical solution, should be profitable The technical content disclosed above is used to make some changes or modifications to equivalent embodiments with equivalent changes, but any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention And modification still belong to the scope of the new technical scheme.

10: Protective cover

11: Viewing area

20: Touch module

21: Optical glue

30: Light valve module

40: Microstructure optical film

50: display module

51: upper polarizer

53: display

55: Lower polarizer

57: Optical glue

60: Backlight module

70: Border

Claims (10)

An all-in-one white touch display, comprising: a protective cover plate, which includes an upper surface and a lower surface, a visible area is formed in the middle of the protective cover plate; a touch module is arranged on the protective cover plate The bottom surface is used to provide a touch function; a light valve module is arranged below the touch module, and the light valve module includes: a housing; a conductive film arranged inside the housing, The conductive film can be energized to generate an electric field; a polymer dispersed liquid crystal layer is filled in the housing and can be driven by the electric field to present a scattering state and a transparent state; a micro-structure optical film, which is set in the light valve mold Below the group, the microstructured optical film includes a first surface and a second surface opposite to each other. The first surface is attached to the light valve module, and the second surface is composed of a plurality of microstructures, wherein each microstructure It is a structure with a micro-triangular cross-sectional shape; a display module is arranged under the micro-structure optical mold to provide a display function. The one-body white touch display according to claim 1, wherein the polymer dispersed liquid crystal layer comprises a high molecular polymer and anisotropic liquid crystal, and the high molecular polymer covers the anisotropic liquid crystal. The one-body white touch display according to claim 2, wherein each of the micro ridges includes two reflective surfaces sandwiching a 90° with each other, the two reflective surfaces are formed on the second surface, and the two reflective surfaces and the second surface Together they form a tiny triangular structure. The one-body white touch display according to claim 3, wherein the display module includes: an upper polarizing plate arranged under the microstructure optical mold; a display arranged under the upper polarizing plate; The polarizing plate is arranged under the display so that the display is sandwiched between the upper polarizing plate and the lower polarizing plate. The one-body white touch display according to claim 4, wherein the one-body white touch display further includes a frame and is arranged between the protective cover and the touch module. The one-body white touch display according to claim 5, wherein the display is a liquid crystal display. The one-body white touch display according to claim 6, wherein the one-body white touch display further includes a backlight module, and the backlight module is disposed under the liquid crystal display module and used to provide a backlight source. The one-body white touch display according to claim 5, wherein the display is a light-emitting diode display. An integrated white light transmission device, comprising: a light valve module, comprising: a housing; a conductive film arranged inside the housing, the conductive film can be energized to generate an electric field; a polymer dispersed liquid crystal layer filled in The inside of the housing can be driven by the electric field to present a scattering state and a transparent state; a micro-structured optical film is disposed under the light valve module, and the micro-structured optical film includes a first surface and a first surface opposite to each other. On two sides, the first side is connected to the light valve module, and the second side is composed of a plurality of micro ridges, wherein each micro ridge is a structure with a small triangular cross-sectional shape. The one-body white light-transmitting device according to claim 9, wherein the polymer dispersed liquid crystal layer comprises a high molecular polymer and anisotropic liquid crystal, and the high molecular polymer covers the anisotropic liquid crystal.

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